Saving for retirement is one thing. But figuring how or where to invest that money can be quite another. Do you invest for growth or for income? That is, generally speaking, do you invest in stocks or bonds? For most people, historically the answer has come down to where they are relative to retirement: If before retirement, they invest for growth in stocks. If in retirement, they invest for income in bonds. Yesterday’s show takes people beyond that traditional — and perhaps outdated — approach, examining a more evolved strategy in which people could pursue a mix of growth and income to help their portfolio last as long as they do in retirement.